On 2021-11-11 16:27:47 +0100 (+0100), Alexander Traud wrote:
[...]

Question: Exists an (easy) way to 'grep' all headers files of all
packages in Debian?

[...]

That may be possible with https://codesearch.debian.net/ though
you'll probably want to fiddle with the filetype and maybe package
parameters as well as your search regex.
--
Jeremy Stanley

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Alexander Traud writes:

Question: Exists an (easy) way to 'grep' all headers files of all packages in Debian?

Does https://codesearch.debian.net help?

--
Alberto

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Recently, I stumbled over a change in Doxygen [1][2][3] which broke the online documentation of a project, I had to use. The fix is easy. However, realizing the issue is not easy (no error, warning, just subtle glitches in the docs). Long story short, I
grepped all -dev packages and their header files installed on my machine. That way, I found projects affected and reported/fixed it upstream.

Question: Exists an (easy) way to 'grep' all headers files of all packages in Debian?

[1] <https://gcc.gnu.org/git/?p=gcc.git;h=f0b8834>
[2] <https://gcc.gnu.org/git/?p=gcc.git;h=014b6db>
[3] <https://gcc.gnu.org/git/?p=gcc.git;h=72ddd86>

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On Thu, Nov 11, 2021 at 04:27:47PM +0100, Alexander Traud wrote:

Question: Exists an (easy) way to 'grep' all headers files of all packages in Debian?

Codesearch indexes 𝐬𝐨𝐮𝐫𝐜𝐞 packages, it sounds like you want binaries.

wget http://ftp.debian.org/debian/dists/sid/main/Contents-amd64.gz
apt download `zgrep '\.h ' Contents-amd64.gz |rev|cut -d/ -f1|rev|sort|uniq`

... which fetches all packages that provide a .h file.


On the other hand Contents-source uses a tab and no section:

wget http://ftp.debian.org/debian/dists/sid/main/Contents-source.gz
apt source `zgrep '\.h\t' Contents-source.gz |cut -d$'\t' -f2|sort|uniq`


Meow!
--
⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ “Exegi monumentum aere perennius” -- “I made a monument more
⢿⡄⠘⠷⠚⠋⠀ durable than bronze”.
⠈⠳⣄⠀⠀⠀⠀ -- Horace (65-8 BC), leaving the loo, constipated

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On Thu, 2021-11-11 at 19:13 +0100, Adam Borowski wrote:

wget http://ftp.debian.org/debian/dists/sid/main/Contents-amd64.gz
apt download `zgrep '\.h ' Contents-amd64.gz |rev|cut -d/ -f1|rev|sort|uniq`

An alternative to wget and zgrep is apt-file:

apt download $(apt-file search -lx '\.h$')
apt download $(apt-file search --package-only --regexp '\.h$')

wget http://ftp.debian.org/debian/dists/sid/main/Contents-source.gz
apt source `zgrep '\.h\t' Contents-source.gz |cut -d$'\t' -f2|sort|uniq`

apt source $(apt-file search -lxI dsc '\.h$')
apt source $(apt-file search --package-only --regexp --index-names dsc '\.h$')

--
bye,
pabs

https://wiki.debian.org/PaulWise

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Thank you so much. Both helped. For another project, I am going for the -dev package content. For this issue here, the source turned out to be much easier.

The result is a bit astonishing. I have not checked for false positives yet. But the initial search gave 650 affected source packages. I expected perhaps 15 packages, which I fix then. However, that is 2.5% of the actual amount, 40 times more than
envisioned. Any idea how to tackle that?

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Hi Alexander (2021.11.12_10:58:19_+0000)

The result is a bit astonishing. I have not checked for false positives yet. But the initial search gave 650 affected source packages. I expected perhaps 15 packages, which I fix then. However, that is 2.5% of the actual amount, 40 times more than

envisioned. Any idea how to tackle that?

Usually: Mass rebuild them all, against the new doxygen, and then do a mass-bug-filing against the ones that FTBFS, describing the issue and
how to fix it.

I usually spin up a cloud instance for something like this, if it's a
lot of packages.

You can also ask Lucas for help doing mass builds, I think?

https://wiki.debian.org/MassRebuilds

SR

--
Stefano Rivera
http://tumbleweed.org.za/
+1 415 683 3272

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I Alexander,

Il 12/11/21 11:58, Alexander Traud ha scritto:

Thank you so much. Both helped. For another project, I am going for the -dev package content. For this issue here, the source turned out to be much easier.

The result is a bit astonishing. I have not checked for false positives yet. But the initial search gave 650 affected source packages. I expected perhaps 15 packages, which I fix then. However, that is 2.5% of the actual amount, 40 times more than

envisioned. Any idea how to tackle that?



cheers from the doxygen maintainer !

Sorry I missed this thread, the title did not jump at me.

Can you please check if this upstream patch fixes the issue you are having ? https://github.com/doxygen/doxygen/issues/8815

Thanks,

Paolo

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upstream .. issue

Paolo, thanks for watching. Doxygen works as expected.

In the past, it accepted group commands without being in a "special comment section". Since version 1.8.16, Doxygen requires a "special
comment section". Again, as designed, Doxygen does not see those group commands now. Consequently, Doxygen does not emit any warning. And the resulting documentation might† be broken. Actually, I noticed this
initially with libopusfile which had empty documentation in chapter 4
because of that [1].

Consequently, Doxygen has no issue. However, looking at the amount of
projects affected, a feature request for Doxygen could be to emit a
warning if such an "old" style group command is found. Not sure.

† That is the problem: It might be obvious. It might be not so obvious change in the resulting documentation. Even in libopusfile, where it was obvious and reported by two other users over a year span, it took me
some time to find the cause.

[1] <https://gitlab.xiph.org/xiph/opusfile/-/merge_requests/34>

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